Abstract: An apparatus for pocketing documents in vertically-aligned pockets. The apparatus includes a frame and slides for mounting the frame for reciprocal movement between a home position and an extended position relative to the apparatus. A plurality of vertically-aligned, pocket members is mounted on the frame for selectively receiving documents to be pocketed. A transfer station, having first and second track members, receives a document therebetween, with the first track member being mounted on the frame for movement therewith. A first transport apparatus is used to move a document in a first direction to said transfer station, and a second transport apparatus is used to move a document in a second direction from the transfer station to the plurality of pocket members. A transfer apparatus is used to transfer a document at the transfer station from the first transport apparatus to said second transport apparatus.